Why does adenine always pair with thymine and guanine always pair with cytosine? What two
factors determine the base pairing rule?
A. space between nitrogenous bases and opportunity for covalent bonds
B. space between nitrogenous bases and opportunities for hydrogen bonding
C. space between nitrogenous bases and the opportunity for ionic bonding
D. space between ritrogenous bases and the opportunity for metallic bonding
Answers: 3
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Why does adenine always pair with thymine and guanine always pair with cytosine? What two
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